Build an App with AI · Real example

Four landing pages in a weekend, then build only what people sign up for.

Validate an app idea in a weekend with four AI app builders: $40K ARR in a month

Running the same prompt through several AI builders is a cheap way to get the best-looking validation page.

$40KARR in one month (as posted)
200–300emails in 2 days
35%click-to-sign-up

Figures as shared by the creator · source

From @Aggravating-Prune915 on Reddit · Jan 2026

The workflow

GoalBuild an App with AI
ScriptChatGPTUseLovableUseCursorUseClaude CodeUsev0UseBase44UseReplit
$ResultARR in one month (as posted)

Made with

ChatGPTScript · OpenAI's AI assistant for ideas, scripts and planningTry ChatGPT AIMore cases
LovableUse · AI app and website builder from a chat promptTry Lovable AIMore cases
CursorUse · AI code editor: describe what you want and it writes and edits the codeTry Cursor AIMore cases
Claude CodeUse · Anthropic's agentic coding tool that edits files and runs commands in your codebaseTry Claude Code AIMore cases

Where & with what

What they did

  1. 1The moveAfter burning out on a recipe app, the founder spent three months learning Lovable, Cursor and Claude Code, then had an idea for ChatSEO, an app that connects to your site's data and tells you what to do to grow traffic.
  2. 2Step 2Write one detailed prompt
  3. 3Step 3Run it in several AI builders
  4. 4ResultHe reported 200 to 300 emails in two days with a 35% click-to-sign-up rate, shipped in two months, and said the app made $40K ARR in its first month (Reddit, r/SaaS, Jan 2026).

Quick answers

What tools do you need?

Lovable (ai app and website builder from a chat prompt); v0 (vercel's ai assistant for designing and building full-stack web apps); Base44 (ai app builder: describe an app in chat and get it with login, database and hosting); Replit (ai app builder: describe an app and replit agent builds and hosts it); ChatGPT (openai's ai assistant for ideas, scripts and planning); Claude Code (anthropic's agentic coding tool that edits files and runs commands in your codebase); Cursor (ai code editor: describe what you want and it writes and edits the code).

How much does it cost?

You can start for $0: Lovable, Base44, Replit, ChatGPT, Cursor have a free plan. v0, Claude Code are paid or trial-based. Check each tool's site for current prices.

Is it allowed?

Follow the platform rules and disclose ads.

Watch out: Revenue is as posted in the title; the post gives no breakdown.

Try it yourself

The prompt · works in Lovable
(Our template, not the creator's prompt.) Turn my rough notes about [app idea] into one detailed landing-page prompt for an AI app builder: headline, 3 benefits, how it works in 3 steps, an email sign-up and FAQ.

Your first step

Open ChatGPT, paste the prompt above and swap the [brackets] for your own niche.

Full write-up & sources

More detail: He dictated his notes in ChatGPT's voice mode, turned them into one structured prompt, and ran it in V0, Base44, Lovable and Replit to get four landing pages, kept the best, and added an email sign-up. He then posted value-first "playbooks" on LinkedIn, X and Reddit that pitched the tool.

Source: @Aggravating-Prune915 on Reddit · Jan 2026. Summarised in our own words; figures as shared by the creator or shown on the platform. Updated .

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